If your CBC feed shows something else, your center ice should carry it. If your Center Ice isn't covering it, CBC should be showing it. Judging by your location you'll probably be getting the Ottawa game on CBC, which would mean that the Leaf game should be telecasted on NHLCI for you.

Call Sportsondemand and tell them if you don't get the game. You shouldn't be blacked out for both games, you paid for Center Ice for this very reason.